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WO/1996/001850A1 |
A polymerization process produces polymers that are insoluble in a reaction mixture that was homogeneous before the polymer began to form. A dispersing agent in the polymerizing system (i.e., the reaction mixture plus the dispersing agen...
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WO/1996/001857A1 |
A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifluoroacetate) (PVTFA) is obtained in relatively high yield under mild conditions by using carbon dioxide un...
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WO/1995/034588A1 |
A method for removing bile salts from a patient by ion exchange by administering to the patient a therapeutically effective amount of one or more highly cross-linked polymers characterized by a repeat unit having formula (1) or copolymer...
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WO/1995/034585A1 |
A method for removing bile salts from a patient that includes administering to the patient a therapeutically effective amount of the reaction product of: a) one or more highly cross-linked polymers characterized by a repeat unit selected...
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WO/1995/017365A1 |
Fluorinated olefins are produced by thermolysis of a silyl ester of a fluorinated aliphatic carboxylic acid in the presence of a catalyst which provides fluoride ion, such as potassium fluoride. The fluorinated olefins are useful as mono...
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WO/1995/017456A1 |
ahis invention relates to a 1-8 % crosslinked terpolymer of alkyl vinyl ether, maleic anhydride and a C10 to C20 alkyl (meth)acrylate in a critical molar ratio of from 1-3:1:0.01-0.08, which polymer has a pH of from about 4 to about 11, ...
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WO/1995/014715A1 |
A process for the semi-batch microemulsion polymerization of polymerizable monomers such as unsaturated monomers in which additional monomer is added after a preceding monomer charge has been substantially polymerized, the additional mon...
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WO/1995/013861A1 |
A separation method comprising the steps: (i) contacting an aqueous liquid that contains a dissolved substance that is to be enriched with a polymer under conditions allowing selective partition of said substance to said polymer, whereaf...
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WO/1995/012625A2 |
Metallic, ash-producing residues which remain in poly(vinyl alcohol) polymer after its preparation from poly(vinyl acetate) are removed by a process which involves contacting a slurry of the poly(vinyl alcohol) polymer, after preparation...
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WO/1995/012624A1 |
Packaging material comprising at least one polymer-based film with (i) unsaturated alcohol-derived units and (ii) vinyl ester-derived units, so that the resulting oxygen permeability, measured at 23 �C and at 100 % relative humidity, i...
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WO/1995/007940A1 |
In preparing rough-surfaced sheet of polyvinyl butyral (PVB), a fraction of stiffly resilient particles of crosslinked PVB are present in the formulation which on exiting an extrusion die opening mechanically interfere with and roughen t...
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WO/1995/007306A1 |
Repeat units having pendant functional groups increase the solubility of polymers containing repeat units of perfluoro-2,2-dimethyl-1,3-dioxole.
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WO/1995/006074A1 |
Water-soluble copolymerizates are disclosed containing carboxyl groups, and also containing the following components incorporated by polymerization: (a) 30 to 80 mol % monoethylenically unsaturated C3-C8 carboxylic acids, anhydrides ther...
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WO/1995/005403A1 |
This invention relates to alk-1-enyl ether-polyester block prepolymers which are curable by cationically initiated radiation and which are defined by formula (I), wherein m has a value of from 1 to 25; A is C2 to C12 alkylene, C6 to C14 ...
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WO/1995/005407A1 |
The invention concerns cross-linkable oligomers or polymers exhibiting ferroelectric or anti-ferroelectric liquid-crystalline properties and characterized by a main chain, at least one cross-linkable side chain and at least one side chai...
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WO/1995/004762A2 |
A process is disclosed for the preparation of liquid and aqueous solutions of amorphous colorless poly(vinyl methyl ether) polymer with low level of impurities from purified vinyl methyl ether. The polymer has relatively high molecular w...
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WO/1995/003340A1 |
A process is disclosed for producing water-resistant, dye-containing polyvinyl alcohol foils and their use as sensor membranes for the reversible optical indication of the pH value of a sample. The foils are produced by direct reaction o...
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WO/1994/029364A1 |
The present invention provides an energy polymerizable composition comprising at least one epoxy monomer or at least one vinyl ether monomer and an initiation system therefor, the initiation system comprising at least one organometallic ...
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WO/1994/029357A1 |
Metallic, ash-producing residues which remain in poly(vinyl alcohol) polymer after its preparation by hydrolysis of poly(vinyl acetate) are removed by a process which involves contacting a slurry of the poly(vinyl alcohol) polymer with i...
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WO/1994/026789A1 |
Novel polyacrylic acid resins are prepared by polymerizing a monomer selected from the group consisting of H2C=CHCO2X, H2C=CR1CO2X, HR2C=CHCO2X, HR2C=CR1CO2X, HR2C=CHCOX, H2C=CHCOX, H2C=CR1COX, HR2C=CR1COX, H2C=CHCSOvX, HR2C=CHCSOvX, HR2...
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WO/1994/027290A1 |
A magnetic recording medium having a magnetic layer on one surface of a nonmagnetic support and a back coat layer on the other surface, wherein the back coat layer contains two kinds of carbon black having different average particle size...
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WO/1994/025433A1 |
Described is a compound of formula (I) in which A is an n-valent organic group and n is an integer greater than 1.
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WO/1994/025547A1 |
A new lubricant comprises at least one compound having a perfluorocyclobutane group, preferably a perfluorovinyl aryl ether. The lubricant is conveniently applied from solvents which are not chlorofluorocarbons and is effective at high t...
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WO/1994/025505A1 |
Polyimides are prepared by (a) contacting monomers which are oligomers having at least one imide group or imide precursor group and at least two dimerizable perfluorovinyl end groups, and (b) exposing the monomers to a temperature of at ...
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WO/1994/022977A1 |
A liquid crystal polymer or copolymer is disclosed of general structure (A) wherein X = CN, COR, CO2R, CHO, CF3; R = branched chain, straight chain or chiral alkyl; (a) = any suitable mesogenic group; Z = single covalent bond, oxygen, su...
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WO/1994/020547A1 |
A water-absorbent resin particle that exhibits a centrifuged absorption capacity of 26 g/g or greater, an absorption under load of 24 g/g or greater at 0.6 psi load. Other aspects of the invention are processes for the preparation of suc...
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WO/1994/015258A1 |
A polymer has at least one photoactive site and more than one perfluorocyclobutane group. New monomers containing photoactive sites or photoactive precursors and at least one perfluorovinyl group are useful for making such polymers. Proc...
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WO/1994/014738A1 |
Described are monomers of the formula (I) (e.g. 3,3,4,4,5,5,6,6-octafluoromethylenecyclopentane) plus copolymers prepared from such monomers and from one or more monomers copolymerizable with them. Such compounds are suitable for use in ...
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WO/1994/014741A1 |
Disclosed herein are novel monomers of the formula CF2 = CF(CF2)nCH2OCF = CF2, wherein n is 1,2 or 3, and novel intermediates of the formula CF2C1CFCl(CF2)nCH2OCF = CF2 wherein n is 1, 2 or 3. Also disclosed is a fluoro-polymer containin...
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WO/1994/013716A1 |
The invention concerns copolymers made up of (a) 20-60 % by wt. of ethylenically unsaturated monomers with acid groups, (b) 40-80 % by wt. of ethylenically unsaturated glycerin derivatives in which one of the glycerin hydroxyl groups is ...
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WO/1994/013712A1 |
The monomer is characterized by the general formula (1) [(R1)(R2)C = C(R3)-CO-L-]q A(NCObloc)p wherein R1, R2 and R3 similar or different, represent a hydrogen or a group selected among the hydrocarbon chains having from 1 to 12 carbon a...
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WO/1994/014203A1 |
The invention concerns electrode membranes made of an ion-exchange material which forms the core and electrodes which contact each side thereof. The membranes are intended for use in fuel cells or electrolysers, the ion-exchange material...
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WO/1994/013710A1 |
A process for producing mixed poly(vinyl acetal)s containing butyral acetal groups and long chain acetal groups derived from one or more aldehydes containing at least six C atoms, by conducting an acetalization reaction forming long chai...
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WO/1994/007929A1 |
An improved process for the polymerization of fluoromonomers to fluoropolymers which comprises using as a chain transfer agent the compound Y(CF2)mCH2CH2I, wherein m is 3 to 12, and Y is F or -CH2CH2I.
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WO/1994/007274A1 |
An ion exchange membrane or ion exchange membrane/electrode assembly having increased efficiency in proton exchange processes as the result of membrane hydration processing comprising heating a hermetically sealed membrane or membrane/el...
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WO/1994/005498A1 |
Fluoroelastomers and fluoroplastics are plasticized with high-boiling fluorinated aliphatic cyclic structures to enhance processibility or to improve final properties.
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WO/1994/003505A1 |
The present invention relates to a rapidly curable, silicone-free release coating composition comprising (a) between about 50 and about 95 wt. % of a vinyl ether having the formula: CnH2n+1O-CH=CH2, wherein n has a value of from 8 to 20,...
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WO/1994/003503A2 |
A fluoroorganic polymeric material which comprises a polymeric chain and at least one group pendent from the polymeric chain, in which the group pendent from the polymeric chain comprises at least one ion-exchange group or group converti...
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WO/1994/001474A1 |
A polymerizable monomer represented by general formula (1), a polymer thereof, a process for producing the same, and the use of the polymer, wherein R1 represents hydrogen, methyl, chloro or cyano; R2 represents C1-C4 alkylene; R3 repres...
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WO/1994/000502A1 |
Homopolymers prepared from diunsaturated mono- or polyhaloperfluoro or perfluoro ethers, and copolymers prepared from two or more of such ethers, or one or more of such ethers and one or more other ethylenically unsaturated monomers; and...
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WO1993024543A1 |
An anti-icing fluid suitable for ground treatment of aircraft, being a glycol-based, aqueous solution containing a hydrophobe-bearing, macromonomer-containing polymer thickener in an amount of less than about 5 weight %. Thickening occur...
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WO/1993/024435A1 |
A polyvinyl ether compound (including one having a specified terminal group) having constitutional units each represented by general formula (I) wherein R¿3?, R¿4? and R¿5? represent each H or alkyl; R?6¿ represents alkylen; R?7¿ re...
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WO/1993/023444A1 |
Novel block copolymers comprising from 20 to 95 mole % of monomer units derived from itaconic acid or a homologue thereof and from 5 to 80 mole % of monomer units derived from vinyl alcohol or a lower vinyl ester are excellent binders of...
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WO/1993/023445A1 |
Copolymers contain, as characteristic polymerized monomer units, (a) 2 to 50 mol % vinylalkylether with 3 to 30 C atoms in the molecule; (b) 10 to 88 mol % monoethylenically unsaturated dicarboxylic acid anhydrides and (c) 10 to 88 mol %...
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WO/1993/022379A1 |
The mechanical properties of cured perfluoroelastomers are enhanced by incorporating into compounds of uncured perfluoropolymer a fluoropolymer containing a hydroxyl group. The modified fluoropolymer can be either a fluoroplastic or a fl...
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WO/1993/022374A1 |
A process is disclosed for stabilising copolymers of maleic acid or maleic anhydride and vinyl alkyl ethers so that they do not lose their molecular weight in an aqueous solution or in a solution of organic solvent. For that purpose, 0.0...
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WO/1993/020155A1 |
A radiation curable coating composition comprising acrylate oligomers and monomers, vinyl ether monomers, and a free radical photoinitiator. The vinyl ether monomers replace N-vinyl-pyrrolidone or other undesirable reactive diluents whil...
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WO/1993/020116A1 |
A process for making a fluoropolymer is disclosed. The process comprises solubilizing a fluoromonomer in solvent comprising a carbon dioxide fluid, and then polymerizing the fluoromonomer to produce the fluoropolymer. A preferred solvent...
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WO/1993/019126A1 |
A process for the production of an ethanol solution of an ethyl or butyl alkyl half-ester copolymer of maleic anhydride and an alkyl vinyl ether which comprises: (a) copolymerizing the monomers in acetone as solvent by simultaneously fee...
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WO/1993/017718A1 |
Contrast agents comprising gas-containing or gas-generating polymer microparticles and/or microballoons, in which the polymer is a biodegradable polymer containing units of formula -[-(O)¿m?-CO-O-C(R?1¿R?2¿)-O-CO-(O)¿n?-]- (wherein R...
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